Cosmic Information Theory and Analysis

宇宙信息论与分析

• 批准号: 1141-2012
• 负责人: Bond, Richard
• 金额: $ 9.83万
• 依托单位: University of Toronto
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2014
• 资助国家: 加拿大
• 起止时间: 2014-01-01 至 2015-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=543942
• 关键词: Cosmic; Information; Theory; Analysis

The production, transport, measurement and meaning of Cosmic Information in theory and with data will be a major theme in 2012-17. Over three decades my group has shown with ever increasing precision that cosmic observables - mostly from CMB experiments we were/are directly involved in - provide key information on structure formation, and the parameters that define it, such as the baryon, dark matter and dark energy (DE) densities, average curvature, size, and those for primordial inflation fluctuations generated, including power spectrum amplitudes and shapes and possible non-Gaussianity. With large scale structure (LSS), supernova and CMB data, we determine allowed physically-motivated trajectories of the dark energy equation of state (DE EOS). We are a critical analysis node of CMB teams, currently immersed in data from the satellite Planck, the Atacama Cosmology Telescope (ACT) and the Cosmic Background Imager (CBI2); in the immediate past from Boomerang, CBIpol, Acbar and WMAP; in 12-17 from WMAP9, ACTpol, ABS, Spider, GBT, Quiet-90 and Planck. By developing/applying theoretical computations of all types and sophisticated statistical tools, we have determined well in 06-11 the CMB temperature and E-polarization power spectra, and will do so exquisitely in 12-17. Many long-term theoretical and phenomenological projects underway to interpret the data avalanche include: the thermal and kinetic CMB Sunyaev-Zeldovich effects, using large hydrodynamical simulations of the cosmic web with energy-feedback; CMB gravitational lensing; extragalactic radio sources and sub-mm sources ( Cosmic Infrared Background); Galactic foregrounds (e.g., polarized dust emission via novel statistical measures of MHD turbulence). A 12-17 target is CMB B-mode polarization to detect inflation-generated gravitational waves or set theory-killing upper limits. Related fundamental physics projects will develop/apply our trajectory methods for inflation-acceleration, the DE EOS and ionization fraction and our non-Gaussian forms from modulated post-inflation-preheating shocks-in-time to the full emerging CMB+LSS data, conditioned by theoretical priors, e.g., motivated by a string landscape.

宇宙信息的理论和数据产生、传输、测量和意义将成为 2012-17 年的主题。 三十年来，我的团队以不断提高的精度证明，宇宙可观测数据（主要来自我们直接参与的宇宙微波背景实验）提供了有关结构形成的关键信息，以及定义结构形成的参数，例如重子、暗物质和暗能量（DE）密度、平均曲率、大小以及产生的原始膨胀波动，包括​​功率谱振幅和形状以及可能的膨胀波动。 非高斯性。利用大尺度结构 (LSS)、超新星和 CMB 数据，我们确定了暗能量状态方程 (DE EOS) 允许的物理驱动轨迹。我们是 CMB 团队的关键分析节点，目前沉浸在来自普朗克卫星、阿塔卡马宇宙学望远镜 (ACT) 和宇宙背景成像仪 (CBI2) 的数据中；近期来自 Boomerang、CBIpol、Acbar 和 WMAP； 12-17 月来自 WMAP9、ACTpol、ABS、Spider、GBT、Quiet-90 和 Planck。通过开发/应用各种类型的理论计算和复杂的统计工具，我们在06-11年很好地确定了CMB温度和E极化功率谱，并将在12-17年精确地确定。许多长期的理论和现象学项目正在进行中，以解释数据雪崩，包括：热和动力学 CMB Sunyaev-Zeldovich 效应，使用带有能量反馈的宇宙网的大型流体动力学模拟； CMB 引力透镜；河外射电源和亚毫米源（宇宙红外背景）；银河系前景（例如，通过新的 MHD 湍流统计测量方法发射偏振尘埃）。 12-17 的目标是 CMB B 模式偏振，以探测暴胀产生的引力波或设定破坏理论的上限。相关的基础物理项目将开发/应用我们的暴胀加速、DE EOS 和电离分数的轨迹方法，以及从调制后暴胀预热冲击到完整新兴的 CMB+LSS 数据的非高斯形式，以理论先验为条件，例如，由弦景观驱动。